add support for "int<min,max>", "negative-int" and "numeric"

integer ranges:
- PHPStan: https://phpstan.org/writing-php-code/phpdoc-types#integer-ranges
- PhpStorm: https://youtrack.jetbrains.com/issue/WI-63623

Author: voku

src/PseudoTypes/IntegerRange.php

@@ -0,0 +1,58 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of phpDocumentor.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @link      http://phpdoc.org
+ */
+
+namespace phpDocumentor\Reflection\PseudoTypes;
+
+use phpDocumentor\Reflection\PseudoType;
+use phpDocumentor\Reflection\Type;
+use phpDocumentor\Reflection\Types\Integer;
+
+/**
+ * Value Object representing the type 'string'.
+ *
+ * @psalm-immutable
+ */
+final class IntegerRange extends Integer implements PseudoType
+{
+    private $minValue;
+    private $maxValue;
+
+    public function __construct(string $minValue, string $maxValue)
+    {
+        $this->minValue = $minValue;
+        $this->maxValue = $maxValue;
+    }
+
+    public function underlyingType(): Type
+    {
+        return new Integer();
+    }
+
+    public function getMinValue(): string
+    {
+        return $this->minValue;
+    }
+
+    public function getMaxValue(): string
+    {
+        return $this->maxValue;
+    }
+
+    /**
+     * Returns a rendered output of the Type as it would be used in a DocBlock.
+     */
+    public function __toString(): string
+    {
+        return 'int<' . $this->minValue . ', ' . $this->maxValue . '>';
+    }
+}

src/PseudoTypes/NegativeInteger.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of phpDocumentor.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @link      http://phpdoc.org
+ */
+
+namespace phpDocumentor\Reflection\PseudoTypes;
+
+use phpDocumentor\Reflection\PseudoType;
+use phpDocumentor\Reflection\Type;
+use phpDocumentor\Reflection\Types\Integer;
+
+/**
+ * Value Object representing the type 'string'.
+ *
+ * @psalm-immutable
+ */
+final class NegativeInteger extends Integer implements PseudoType
+{
+    public function underlyingType(): Type
+    {
+        return new Integer();
+    }
+
+    /**
+     * Returns a rendered output of the Type as it would be used in a DocBlock.
+     */
+    public function __toString(): string
+    {
+        return 'negative-int';
+    }
+}

src/TypeResolver.php

@@ -15,6 +15,7 @@
 
 use ArrayIterator;
 use InvalidArgumentException;
+use phpDocumentor\Reflection\PseudoTypes\IntegerRange;
 use phpDocumentor\Reflection\PseudoTypes\List_;
 use phpDocumentor\Reflection\Types\Array_;
 use phpDocumentor\Reflection\Types\ArrayKey;
@@ -40,6 +41,7 @@
 use function count;
 use function end;
 use function in_array;
+use function is_numeric;
 use function key;
 use function preg_split;
 use function strpos;
@@ -82,10 +84,12 @@ final class TypeResolver
         'non-empty-lowercase-string' => PseudoTypes\NonEmptyLowercaseString::class,
         'non-empty-string' => PseudoTypes\NonEmptyString::class,
         'numeric-string' => PseudoTypes\NumericString::class,
+        'numeric' => Types\Numeric::class,
         'trait-string' => PseudoTypes\TraitString::class,
         'int' => Types\Integer::class,
         'integer' => Types\Integer::class,
         'positive-int' => PseudoTypes\PositiveInteger::class,
+        'negative-int' => PseudoTypes\NegativeInteger::class,
         'bool' => Types\Boolean::class,
         'boolean' => Types\Boolean::class,
         'real' => Types\Float_::class,
@@ -257,6 +261,8 @@ private function parseTypes(ArrayIterator $tokens, Context $context, int $parser
                 if ($classType !== null) {
                     if ((string) $classType === 'class-string') {
                         $types[] = $this->resolveClassString($tokens, $context);
+                    } elseif ((string) $classType === 'int') {
+                        $types[] = $this->resolveIntRange($tokens, $context);
                     } elseif ((string) $classType === 'interface-string') {
                         $types[] = $this->resolveInterfaceString($tokens, $context);
                     } else {
@@ -479,6 +485,75 @@ private function resolveClassString(ArrayIterator $tokens, Context $context): Ty
         return new ClassString($classType->getFqsen());
     }
 
+    /**
+     * Resolves integer ranges
+     *
+     * @param ArrayIterator<int, (string|null)> $tokens
+     */
+    private function resolveIntRange(ArrayIterator $tokens, Context $context): Type
+    {
+        $tokens->next();
+
+        $token = '';
+        $minValue = null;
+        $maxValue = null;
+        $commaFound = false;
+        $tokenCounter = 0;
+        while ($tokens->valid()) {
+            $tokenCounter++;
+            $token = $tokens->current();
+            if ($token === null) {
+                throw new RuntimeException(
+                    'Unexpected nullable character'
+                );
+            }
+
+            $token = trim($token);
+
+            if ($token === '>') {
+                break;
+            }
+
+            if ($token === ',') {
+                $commaFound = true;
+            }
+
+            if ($commaFound === false && $minValue === null) {
+                if (is_numeric($token) || $token === 'max' || $token === 'min') {
+                    $minValue = $token;
+                }
+            }
+
+            if ($commaFound === true && $maxValue === null) {
+                if (is_numeric($token) || $token === 'max' || $token === 'min') {
+                    $maxValue = $token;
+                }
+            }
+
+            $tokens->next();
+        }
+
+        if ($token !== '>') {
+            if (empty($token)) {
+                throw new RuntimeException(
+                    'interface-string: ">" is missing'
+                );
+            }
+
+            throw new RuntimeException(
+                'Unexpected character "' . $token . '", ">" is missing'
+            );
+        }
+
+        if (!$minValue || !$maxValue || $tokenCounter > 4) {
+            throw new RuntimeException(
+                'int<min,max> has not the correct format'
+            );
+        }
+
+        return new IntegerRange($minValue, $maxValue);
+    }
+
     /**
      * Resolves class string
      *

src/Types/Numeric.php

@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * This file is part of phpDocumentor.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ *
+ * @link      http://phpdoc.org
+ */
+
+namespace phpDocumentor\Reflection\Types;
+
+use phpDocumentor\Reflection\Type;
+
+/**
+ * Value Object representing the 'numeric' pseudo-type, which is either a numeric-string, integer or float.
+ *
+ * @psalm-immutable
+ */
+final class Numeric implements Type
+{
+    /**
+     * Returns a rendered output of the Type as it would be used in a DocBlock.
+     */
+    public function __toString(): string
+    {
+        return 'numeric';
+    }
+}

tests/unit/CollectionResolverTest.php

@@ -231,10 +231,16 @@ public function testBadArrayCollectionKey(): void
     public function testGoodArrayCollectionKey(): void
     {
         $fixture = new TypeResolver();
-        $fixture->resolve('array<array-key,string>', new Context(''));
+        $resolvedType = $fixture->resolve('array<array-key,string>', new Context(''));
+
+        $this->assertInstanceOf(Array_::class, $resolvedType);
+        $this->assertSame('array<array-key,string>', (string) $resolvedType);
 
         $fixture = new TypeResolver();
-        $fixture->resolve('array<class-string,string>', new Context(''));
+        $resolvedType = $fixture->resolve('array<class-string,string>', new Context(''));
+
+        $this->assertInstanceOf(Array_::class, $resolvedType);
+        $this->assertSame('array<class-string,string>', (string) $resolvedType);
     }
 
     /**